Somehow that is wqrong though, bc the ancient one and hulk said once the stones are back in place the parallel timelines will disappear and time go back to normal, also if steve was really in a parralel timeline he wouldn't be sitting on that bench as an old men in our timeline, it's pretty clear he lived in our timeline while the other steve was still in the ice (and would later be brought back to life, become part of the avengers and then lastly go back to the past again creating a loop, that is how time works, not sure who came up with this nonsense they wanted to sell to the fans lol.